Holodecks are equipped with safety settings to prevent the injury or death of their users. Without these safeties, the holodeck is as dangerous as whatever environment it simulates.<ref>''[[Star Trek: First Contact]]''</ref> Deactivating the safeties can theoretically be done only by authorized personnel<ref>TNG "Descent"</ref>; in practice, if any kind of malfunction occurs in a holodeck's hardware or software, the safeties will almost certainly fail.<ref>TNG "The Big Goodbye", "A Fist Full of Datas", "Emergence", DS9 "Our Man Bashir", etc.</ref>

Holodecks are equipped with safety settings to prevent the injury or death of their users. Without these safeties, the holodeck is as dangerous as whatever environment it simulates.<ref>''[[Star Trek: First Contact]]''</ref> Deactivating the safeties can theoretically be done only by authorized personnel<ref>TNG "Descent"</ref>; in practice, if any kind of malfunction occurs in a holodeck's hardware or software, the safeties will almost certainly fail.<ref>TNG "The Big Goodbye", "A Fist Full of Datas", "Emergence", DS9 "Our Man Bashir", etc.</ref>

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The Holodeck on the [[USS Voyager|''USS Voyager'']] was powered by it's own dedicated power reactors that, according to [[Harry Kim|Ensign Kim]], are not compatible(whatever the Hell that means) with the power system used by the rest of the ship. This somehow meant that while the rest of the ship was having major power outages due to limited fuel reserves the Holodeck could be run without any need for rationing.<ref>VOY Parallax</ref> Of course this begs the question why they can fix it to be compatible.....[http://tvtropes.org/pmwiki/pmwiki.php/Main/VoodooShark]